Search results for "N dimethylformamide"

showing 2 items of 2 documents

CCDC 665727: Experimental Crystal Structure Determination

2009

Related Article: E.Coronado, C.Gimenez-Saiz, C.J.Gomez-Garcia, F.M.Romero|2008|Solid State Sciences|10|1794|doi:10.1016/j.solidstatesciences.2008.01.031

Space GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinatestetrakis((4455-Tetramethyl-2-(1-methylpyridinium-4-yl)-3-oxido-45-dihydro-1H-imidazol-1-yl)oxidanyl radical) (mu~12~-silicato)-tetracosakis(mu~2~-oxo)-dodeca-oxo-dodeca-tungsten dimethylformamide solvate
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Studies on the synthesis of heterocyclic compounds. Part IX. Action ofN,N-dimethylformamide dimethylacetal on some oximino-β-dicarbonyl compounds

1982

3-Oximino-2,4-pentanedione (1) and ethyl 2-oximino-3-oxobutanoate (6) reacted with N,N-dimethylformamide dimethylacetal (DFDA) to give 1,7-bisdimethylamino-3,5-dioxo-4-methoximinohepta-1,6-diene (4) and ethyl 5-dimethylamino-2-methoximino-3-oxo-4-pentenoate (8), respectively. When compounds 4 and 8 were treated with hydrazine hydrate, they gave O-methyldipyrazol-3(5)-ylketoxime (5) and ethyl 2-methoximino-3(5)-pyrazolylethanoate (9) together with its corresponding hydrazide 10, respectively. Upon action of DFDA on 3-oximino-2,4-pentanedione (1) at -20° an explosive crystalline product was obtained. On the other hand, the reaction of 3-acetoximino-2,4-pentanedione (11) with DFDA at -20° affo…

chemistry.chemical_compoundEthanolchemistryOrganic ChemistryHydrazineN dimethylformamideOrganic chemistryHydrazideHydrateJournal of Heterocyclic Chemistry
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